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The intermolecular C–H cross-coupling between aromatic ethers has been achieved for the first time using perfluorinated hypervalent iodine(III) compounds as extreme single-electron-transfer (SET) oxidants. The demonstrations of this specific coupling could provide a direct route to valuable oxygenated mixed naphthalene-benzene biaryls 3only, without formation of other biaryl-derived byproducts. [ABSTRACT FROM AUTHOR]

The expeditious and efficient [3 2] coupling approach of quinone monoacetals 1with alkene nucleophiles 2by the action of an activated Brønsted acid in the presence of a hydrogen bond donor perfluorinated alcohol has been achieved. With the optimized combined acid, the reaction could proceed under mild conditions by only mixing the two reactants to afford the cycloadducts 3in a short time (within 10 min) with good to quantitative yields. [ABSTRACT FROM AUTHOR]

We have succeeded in the first versatile iodoarene-catalyzed C−C bond-forming reactions by development of a new reoxidation system at low temperatures using stoichiometric bis(trifluoroacetyl) peroxide A in 2,2,2-trifluoroethanol (TFE). The catalytic system supplies a wide range of substrates and functional availabilities sufficient to be used in the key synthetic process of producing biologically important Amaryllidaceae alkaloids. [ABSTRACT FROM AUTHOR]

We have developed a new and reliable method for the direct construction of biologically important aryl lactones and phthalides from carboxylic and benzoic acids, using a combination of hypervalent iodine(III) reagents with KBr. [ABSTRACT FROM AUTHOR]